COLUMBIA UNIVERSITY

Department of Mathematics

Number Theory: (D. Goldfeld, H. Jacquet, S.W. Zhang)
Stefan Wewers (Queen's University, Kingston & Penn)
"Reduction of Galois covers and Hurwitz spaces"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.

Samuel Eilenberg Lectures: (D. Goldfeld)
Alex Lubotzky (Hebrew University & Columbia University)
Subgroup Growth: "Counting normal subgroups; counting maximal subgroups; intermediate growth and gap results"
4:00-5:15 p.m., 507 Math. Tea will be served at 3:30 p.m., 508

Linear and non-linear groups, linearization methods (A. Lubotzky, W. Neumann, J. Birman )
Radu Popescu
"Bigelow's proof that the Burau representation of the braid group is not linear for n>4"
10:45 a.m., 507 Math. NOTE VARYING TIME AND PLACE!

Probability: (I. Karatzas)
Ronnie Sircar (Princeton)
"Partial hedging under uncertain volatility"
11:00-12:15 p.m., 520 Math.
Tea and Coffee will be served at 10:30 a.m., 621 Math.

Geometric Topology: (J. Birman, W. Neumann, A. Champanerkar)
Daniel Piollet (University of Paris)
"Words, Groups and Surfaces "
1:15 p.m., 507 Math.

Algebraic Geometry: (M. Thaddeus)
Mihnea Popa (Michigan)
"Quot schemes, Verlinde bundles, and effective base point freeness on moduli spaces of vector bundles"
2:30 p.m., 417 Math.